Exhibit 99.9

NGL ENERGY PARTNERS LP AND SUBSIDIARIES

UNAUDITED PRO FORMA CONDENSED CONSOLIDATED

FINANCIAL STATEMENTS

Introduction

The following represents the unaudited pro forma condensed consolidated balance sheet of NGL Energy Partners LP (“we”, “us”, “our”, “NGL” or “the Partnership”) as of June 30, 2013 and the unaudited pro forma condensed consolidated statements of operations for the year ended March 31, 2013 and the three months ended June 30, 2013. The accompanying unaudited condensed consolidated financial statements give pro forma effect to a number of transactions, which are summarized below:

·                  On August 1, 2013, we acquired all of the membership interests in seven entities (collectively, the “OWL Entities”) affiliated with Oilfield Water Lines, LP, whereby we acquired water disposal and transportation assets in Texas. We issued 2,463,287 common units, valued at $68.6 million, and paid $167.7 million of cash, net of cash acquired, in exchange for the assets and operations of the OWL Entities. The agreement also contemplates a post-closing payment for certain working capital items. The agreements with the former owners of the OWL Entities include a provision whereby the purchase price may be increased if certain performance targets are achieved. If the acquired assets generate Adjusted EBITDA, as defined in the agreements, in excess of $3.3 million during any one of the six months following the acquisition, the purchase price will be increased by seventy-two times the amount by which this target is exceeded. The maximum potential increase to the purchase price under this provision is $60 million. The acquired entities included the following entities that were formed during 2012 by Oilfield Water Lines, LP: OWL Cotulla SWD, LLC; OWL Nixon SWD, LLC; OWL Operating, LLC; and HR OWL, LLC. The acquired entities also include the following entities that were acquired during 2012 by Oilfield Water Lines, LP: High Roller Wells Pearsall SWD No. 1, Ltd., which was acquired on August 28, 2012 and renamed OWL Pearsall SWD, LLC; High Roller Wells Karnes SWD No. 1, Ltd., which was acquired on December 4, 2012 and renamed OWL Karnes SWD, LLC; and Lotus Oilfield Services, LLC, which was acquired on December 27, 2012.

·                  On July 5, 2013, we completed a public offering of 10,350,000 common units. We received net proceeds of approximately $287.5 million, after underwriting discounts and commissions of $12.0 million and estimated offering costs of $0.7 million. We used the majority of the net proceeds from the offering to reduce the balance on our Revolving Credit Facility.

·                  On December 31, 2012, we entered into a Sale Agreement (the “Sale Agreement”) with Third Coast Towing, LLC (“Third Coast”) and the former owners of Third Coast (the “Selling Members”) pursuant to which we acquired all of the limited liability company membership interests of Third Coast in exchange for $43.0 million in cash. The purchase price may be subject to further adjustment under the terms of the Sale Agreement, including with respect to refinements to the estimated value of the acquired working capital.

·                  On December 31, 2012, we entered into a Call Agreement (the “Third Coast Call Agreement”) with the Selling Members pursuant to which the Selling Members agreed to purchase at least $8.0 million (or at their option, up to $10.0 million) of common units of the Partnership at an agreed value of $23.21 per unit in a private placement. On January 11, 2013, the Selling Members purchased 344,680 common units pursuant to the Third Coast Call Agreement.

·                  On November 2, 2012, we completed an acquisition of Pecos Gathering & Marketing, L.L.C. and its affiliated companies Transwest Leasing, LLC, Blackhawk Gathering, LLC, Midstream Operations, LLC, and Striker Oilfield Services, LLC (collectively, “Pecos”) pursuant to an Equity Purchase Agreement (the “Equity Purchase Agreement”) with Pecos and the owners of Pecos. We acquired all of the limited liability company membership interests of Pecos in exchange for approximately $134.6 million of cash, which included payments made to the selling owners and payments made to retire certain liabilities of Pecos. The purchase price may be subject to further adjustment under the terms of the Equity Purchase Agreement, including with respect to refinements to the estimated value of the acquired working capital.

·                  In connection with the closing of the acquisition of Pecos, we entered into a Call Agreement (the “Pecos Call Agreement”) with the former owners of Pecos (the “Call Parties”) pursuant to which the Call Parties agreed to purchase at least $45.0 million (or at their option, up to $60.0 million) of common units of the Partnership in a private placement following the consummation of the Pecos acquisition. On November 12, 2012, the Call Parties purchased 1,834,414 common units for an aggregate call price of $45.0 million pursuant to the Pecos Call Agreement.

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·                  On January 15, 2013, we entered into an amendment to our Credit Agreement to increase the capacity under our revolving credit facility.

·                  On June 19, 2012, we completed a business combination with High Sierra Energy, LP and High Sierra Energy GP, LLC (collectively, “High Sierra”). High Sierra’s businesses include crude oil gathering, transportation and marketing; water treatment, disposal, and transportation; and natural gas liquids transportation and marketing. We paid $91.8 million of cash (net of $5.0 million of cash acquired) and issued 18,018,468 common units to acquire High Sierra Energy, LP. We also paid $97.4 million of cash to retire long-term debt of High Sierra Energy, LP and to settle certain other of High Sierra Energy, LP’s obligations. Our general partner acquired High Sierra Energy GP, LLC by paying $50.0 million of cash and issuing equity. Our general partner then contributed its ownership interests in High Sierra Energy GP, LLC to us, in return for which we paid our general partner $50.0 million of cash and issued 2,685,042 common units to our general partner.

·                  On June 19, 2012, we entered into a new revolving credit agreement (the “Credit Agreement”) with a syndicate of banks. Also on June 19, 2012, we entered into a Note Purchase Agreement whereby we issued $250 million of notes payable in a private placement (the “Senior Notes”). We used the proceeds from the issuance of the Senior Notes and borrowings under the Credit Agreement to repay existing debt and to fund the acquisition of High Sierra.

The accompanying unaudited pro forma condensed consolidated balance sheet as of June 30, 2013 gives pro forma effect to the following, as if such transactions (in each case, as described in more detail above) had occurred on June 30, 2013:

·                  Our business combination with the OWL Entities; and

·                  The sale of common units in a public offering in July 2013.

The accompanying unaudited pro forma condensed consolidated statement of operations for the year ended March 31, 2013 gives pro forma effect to the following, as if such transactions had occurred on April 1, 2012:

·                  Our business combination with the OWL Entities;

·                  The sale of common units in a public offering in July 2013;

·                  Our business combination with Third Coast;

·                  The sale of common units pursuant to the Third Coast Call Agreement;

·                  Our business combination with Pecos;

·                  The sale of common units pursuant to the Pecos Call Agreement;

·                  Our entry into an amendment to our Credit Agreement in January 2013;

·                  Our business combination with High Sierra;

·                  Our entry into the Credit Agreement in June 2012; and

·                  Our issuance of Senior Notes in June 2012.

The accompanying unaudited pro forma condensed consolidated statement of operations for the three months ended June 30, 2013 gives pro forma effect to the following, as if such transactions (in each case, as described in more detail above) had occurred on April 1, 2012:

·                  Our business combination with the OWL Entities; and

·                  The sale of common units in a public offering in July 2013.

The unaudited pro forma condensed consolidated financial statements are provided for informational purposes only and should be read in conjunction with the following:

·                  The audited historical financial statements of NGL Energy Partners LP included in our Annual Report on Form 10-K for the year ended March 31, 2013;

·                  The unaudited historical financial statements of NGL Energy Partners LP included in our Quarterly Report on Form 10-Q for the three months ended June 30, 2013;

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·                  The audited and unaudited consolidated financial statements of Oilfield Water Lines, LP (“OWL LP”) included in this Current Report on Form 8-K/A;

·                  The audited and unaudited financial statements of High Roller Wells Pearsall SWD No. 1, Ltd. (“Pearsall”) included in this Current Report on Form 8-K/A;

·                  The audited and unaudited financial statements of High Roller Wells Karnes SWD No. 1, Ltd. (“Karnes”) included in this Current Report on Form 8-K/A;

·                  The audited and unaudited financial statements of Lotus Oilfield Services, LLC (“Lotus”) included in this Current Report on Form 8-K/A;

·                  The audited and unaudited historical financial statements of Third Coast Towing, LLC included in our Current Report on Form 8-K/A filed on March 13, 2013;

·                  The audited and unaudited historical financial statements of Pecos Gathering and Marketing, LLC, Transwest Leasing, LLC, Blackhawk Gathering, LLC, Midstream Operations, LLC, Toro Operating Company, Inc., and Striker Oilfield Services, LLC included in our current report on Form 8-K/A filed on January 18, 2013; and

·                  The audited and unaudited historical financial statements of High Sierra Energy GP, LLC included in our Current Report on Form 8-K/A filed on September 4, 2012.

The following unaudited pro forma condensed consolidated financial statements are based on certain assumptions and do not purport to be indicative of the results that actually would have been achieved if the events described above had occurred on the dates indicated. Moreover, they do not project NGL’s results of operations for any future date or period.

The accompanying unaudited pro forma condensed consolidated statements of operations reflect depreciation and amortization estimates which are preliminary, as our identification of the assets and liabilities acquired, and the fair value determinations thereof, for the business combinations with the OWL Entities, Pecos, and Third Coast have not been completed. The fair value estimates reflected in the accompanying unaudited pro forma condensed consolidated statements of operations are based on the best estimates available at this time. There is no guarantee that the preliminary fair value estimates, and consequently the unaudited pro forma condensed consolidated statements of operations, will not change. To the extent that the final acquisition accounting results in an increased allocation of goodwill recorded, this amount would not be subject to amortization, but would be subject to annual impairment testing. To the extent the final acquisition accounting results in an increase to the preliminary computation of depreciable property, plant and equipment or amortizable intangible assets done for the purpose of preparing these unaudited pro forma statements of operations, the amount would be subject to depreciation or amortization, which would result in a decrease to the estimated pro forma income reflected in the accompanying unaudited pro forma condensed consolidated statements of operations. We expect to complete the final acquisition accounting for the Pecos combination prior to filing our Form 10-Q for the quarter ended September 30, 2013. We expect to complete the final acquisition accounting for the Third Coast combination prior to filing our Form 10-Q for the quarter ended December 31, 2013. We expect to complete the final acquisition accounting for the combination with the OWL Entities prior to filing our Form 10-Q for the quarter ended June 30, 2014.

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NGL ENERGY PARTNERS LP

Unaudited Pro Forma Condensed Consolidated Balance Sheet

As of June 30, 2013

(U.S. Dollars in Thousands)

See accompanying notes.

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NGL ENERGY PARTNERS LP

Unaudited Pro Forma Condensed Consolidated

Statement of Operations

For the Year Ended March 31, 2013

(U.S. Dollars in Thousands, Except Unit and Per Unit Amounts)

(Page 1 of 3)

See accompanying notes and continuation on Page 2 of 3.

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NGL ENERGY PARTNERS LP

Unaudited Pro Forma Condensed Consolidated

Statement of Operations

For the Year Ended March 31, 2013

(U.S. Dollars in Thousands, Except Unit and Per Unit Amounts)

(Page 2 of 3)

See accompanying notes and continuation on Page 3 of 3.

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NGL ENERGY PARTNERS LP

Unaudited Pro Forma Condensed Consolidated

Statement of Operations

For the Year Ended March 31, 2013

(U.S. Dollars in Thousands, Except Unit and Per Unit Amounts)

(Page 3 of 3)